Daily Sprout

Rhode Island Victory: Several big automakers tried to stop the Ocean State from adopting California’s stricter auto emissions regulations. A federal district judge ruled against them today, giving Detroit another ding and environmentalists a boon. — NYT’s Green, Inc.

Testing, Testing: GM announced that nine companies will begin on-road testing of its fourth-generation hydrogen fuel-cell car in Berlin after more than a decade in development. — Autoblog Green

Battle of the Fuels: Collapsed oil prices have softened some of the urgent arguments for clean energy. Natural gas, which is relatively cheap and and expected to stay that way, could give renewables a run for their money. — WSJ’s Environmental Capital

Weakest Link: Invented two centuries ago, batteries have slipped behind in the high-tech world. Now energy-storage industry is a hothouse for innovation. — Newsweek